When I first started trying to reload in the 60s, I had an Ithaca Model 37 twenty gauge. As it turned out, the end of my reloading session left a shell with no shot. The nest time out I fired the shotless shell , and then another. You know what happened. The wad from the first firing had stuck [near the choke] and the second shot exploded the barrel similar to the banana peel fashion one used to see in cartoons. I do remember it took much effort to saw off the damaged portion [about 6 inches]. Very tough steel.

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